Huawei is fine-tuning the Watch Ultimate 2 after launch, and it is now getting a meaningful software update that adds a few genuinely useful features. The latest build is HarmonyOS 6.0.0.156, which is rolling out globally and is over 1GB in file size. According to reports, users in Europe have already started receiving the update.

One of the biggest changes is improved eSIM behavior, especially when it comes to power saving. With the update installed, the watch can now handle calls and SMS messages over eSIM even while in power-saving mode. It’s far more practical for extended use without a phone nearby.

Huawei has also enabled VoLTE by default for supported eSIM providers. There’s no manual toggle for this option, but it should result in better call quality where supported.

Another notable addition targets fitness-focused users. The Watch Ultimate 2 can now connect directly to external sensors, including heart rate straps, power meters, speed sensors, and cadence sensors. This brings the watch closer to dedicated sports watches, especially for cycling and structured training, where external sensors are sometimes preferred over wrist-based tracking.

Aside from feature additions, the update includes general system optimizations and stability improvements, though Huawei hasn’t gone into detail on what’s changed behind the scenes.

The update is being rolled out in stages and can be installed through the Huawei Health app or directly on the watch via Settings > System & updates > Software updates.

In short, this update makes the Watch Ultimate 2 feel more complete, particularly for users who rely on standalone connectivity and advanced fitness tracking without carrying their phone everywhere.

For those interested, here’s our review of the Watch Ultimate 2.

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